document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=263955>Question 263955</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The percentage of adult smokers in the U.S. is declining each year. If t represents the number of years since 1997, then\r<BR>\n" );
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document.write( "P(t) = -0.51t + 24.675\r<BR>\n" );
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document.write( "represents the corresponding percentage of adults who smoked cigarettes during that year. \r<BR>\n" );
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document.write( "Write an inequality that can be used to determine the first year in which the percentage of adult smokers falls below 15%. \r<BR>\n" );
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document.write( "Solve the inequality in part a using an algebraic as well as a graphical approach. <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #194432 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=194432\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the percentage of adult smokers in the U.S. is declining each year. <BR>\n" );
document.write( "If t represents the number of years since 1997, then <BR>\n" );
document.write( "P(t) = -0.51t + 24.675 <BR>\n" );
document.write( "represents the corresponding percentage of adults who smoked cigarettes during that year. <BR>\n" );
document.write( "Write an inequality that can be used to determine the first year in which the percentage of adult smokers falls below 15%. <BR>\n" );
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document.write( "15 > -0.51t + 24.675<BR>\n" );
document.write( "-0.51t < -9.675<BR>\n" );
document.write( "t > 18.97<BR>\n" );
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document.write( "Earliest year: 1997+18.97 = 2015.97; rounded up is 2016\r<BR>\n" );
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document.write( "Solve the inequality in part a using an algebraic as well as a graphical approach. <BR>\n" );
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document.write( "P(t) = -0.51t + 24.675 <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28400%2C300%2C-40%2C60%2C-5%2C50%2C15%2Cy%3C-0.51x%2B24.675%29 ALIGN=MIDDLE  ALT=\"graph%28400%2C300%2C-40%2C60%2C-5%2C50%2C15%2Cy%3C-0.51x%2B24.675%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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